Voice activity detection in Javascript
vad.js is a small Javascript library for voice activity detection.
Quick Start
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>VAD Test</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
</head>
<body>
<script type="text/javascript" src="lib/vad.js"></script>
<script type="text/javascript">
// Create AudioContext
window.AudioContext = window.AudioContext || window.webkitAudioContext;
var audioContext = new AudioContext();
// Define function called by getUserMedia
function startUserMedia(stream) {
// Create MediaStreamAudioSourceNode
var source = audioContext.createMediaStreamSource(stream);
// Setup options
var options = {
source: source,
voice_stop: function() {console.log('voice_stop');},
voice_start: function() {console.log('voice_start');}
};
// Create VAD
var vad = new VAD(options);
}
// Ask for audio device
navigator.getUserMedia = navigator.getUserMedia ||
navigator.mozGetUserMedia ||
navigator.webkitGetUserMedia;
navigator.getUserMedia({audio: true}, startUserMedia, function(e) {
console.log("No live audio input in this browser: " + e);
});
</script>
</body>
</html>Tested - Browser
- Firefox 45.0a1+
##Author
- Kelly Davis [email protected]
- Mark Panaghiston https://github.com/thepag
##Thanks The code is based on the following implementations:
##Contribution
Any contribution will be welcome!